window.onload = async function () {
  try {
    const res = await axios({
      url: '/dashboard',
      method: 'get',
    })
   
    const {
      data: { overview },
    } = res

    //  document.querySelector('span[name=salary]').innerHTML = overview.salary
    //  document.querySelector('span[name=student_count]').innerHTML = overview.student_count
    //  document.querySelector('span[name=age]').innerHTML = overview.age
    //  document.querySelector('span[name=group_count]').innerHTML = overview.group_count

    //  for in  遍历   一一对应才行
    for (let k in overview) {
      document.querySelector(`span[name=${k}]`).innerHTML = overview[k]
    }
    //  调用折线图
    setYearSalary(res.data.year)

    //  调用饼图
    setClassSalary(res.data.salaryData)

    // 调用柱状图
    setTeamSalary(res.data.groupData)

    // 调用男女生
    setGenderSalary(res.data.salaryData)

    // 调用地图
    initMapChart(res.data.provinceData)
  } catch (error) {
    console.dir(error)
  }
}

// 创新一个折线图函数
const setYearSalary = (data) => {
  const chartDom = document.querySelector('#line')

  const myChart = echarts.init(chartDom)
  myChart.setOption({
    title: {
      text: '2022全学科薪资走势',
      top: '3%',
      left: '2%',
    },
    xAxis: {
      type: 'category',
      data: data.map((item) => item.month),
      axisLine: {
        lineStyle: {
          color: '#ccc',
          type: 'dashed',
        },
      },
      //坐标轴标签的颜色
      axisLabel: {
        color: '#999',
      },
    },
    yAxis: {
      type: 'value',
      splitLine: {
        lineStyle: {
          type: 'dashed',
        },
      },
    },
    tooltip: {
      trigger: 'axis',
    },
    grid: {
      //网格距离上方距离
      top: '20%',
    },
    color: {
      type: 'linear',
      x: 0,
      y: 0,
      x2: 0,
      y2: 1,
      colorStops: [
        {
          offset: 0,
          color: '#499FEE', // 0% 处的颜色
        },
        {
          offset: 1,
          color: '#5D75F0', // 100% 处的颜色
        },
      ],
      global: false, // 缺省为 false
    },
    // 径向渐变，前三个参数分别是圆心 x, y 和半径，取值同线性渐变
    series: [
      {
        data: data.map((item) => item.salary),
        type: 'line',
        smooth: true,
        lineStyle: {
          width: 6,
        },
        symbolSize: 10,
        areaStyle: {
          color: new echarts.graphic.LinearGradient(0, 0, 0, 1, [
            {
              offset: 0,
              color: '#499FEE',
            },
            {
              offset: 0.8,
              color: 'rgba(255,255,255,0.2)',
            },
            {
              offset: 1,
              color: 'rgba(255,255,255,0)',
            },
          ]),
        },
      },
    ],
  })
}

// 创建饼图的函数
const setClassSalary = (data) => {
  const chartDom = document.querySelector('#salary')

  const myChart = echarts.init(chartDom)
  myChart.setOption({
    title: {
      text: '班级薪资分布',
      top: 15,
      left: 10,
      textStyle: {
        fontSize: 16,
      },
    },
    tooltip: {
      trigger: 'item',
    },
    legend: {
      bottom: '6%',
      left: 'center',
    },
    color: ['#FDA224', '#5097FF', '#3ABCFA', '#34D39A'],
    series: [
      {
        name: '班级薪资分布',
        type: 'pie',
        radius: ['50%', '64%'],
        center: ['50%', '45%'],
        avoidLabelOverlap: false,
        itemStyle: {
          borderRadius: 10,
          borderColor: '#fff',
          borderWidth: 2,
        },
        label: {
          show: false,
          position: 'center',
        },
        labelLine: {
          show: false,
        },
        data: data.map((item) => {
          return {
            name: item.label,
            value: item.g_count + item.b_count,
          }
        }),
      },
    ],
  })
}

// 创建柱状图的函数
const setTeamSalary = (data) => {
  const chartDom = document.querySelector('#lines')

  const myChart = echarts.init(chartDom)
  let option = {
    grid: {
      left: 70,
      top: 30,
      right: 30,
      bottom: 50,
    },
    xAxis: {
      type: 'category',
      data: data['1'].map((item) => item.name),
      axisLine: {
        lineStyle: {
          color: '#ccc',
          type: 'dashed',
        },
      },
      axisLabel: {
        color: '#999',
      },
    },
    yAxis: {
      type: 'value',
      splitLine: {
        lineStyle: {
          type: 'dashed',
        },
      },
    },
    tooltip: {
      trigger: 'item',
    },
    color: [
      {
        type: 'linear',
        x: 0,
        y: 0,
        x2: 0,
        y2: 1,
        colorStops: [
          {
            offset: 0,
            color: '#34D39A', // 0% 处的颜色
          },
          {
            offset: 1,
            color: 'rgba(52,211,154,0.2)', // 100% 处的颜色
          },
        ],
      },
      {
        type: 'linear',
        x: 0,
        y: 0,
        x2: 0,
        y2: 1,
        colorStops: [
          {
            offset: 0,
            color: '#499FEE', // 0% 处的颜色
          },
          {
            offset: 1,
            color: 'rgba(73,159,238,0.2)', // 100% 处的颜色
          },
        ],
      },
    ],
    series: [
      {
        data: data['1'].map((item) => item.hope_salary),
        type: 'bar',
        name: '期望薪资',
      },
      {
        data: data['1'].map((item) => item.salary),
        type: 'bar',
        name: '就业薪资',
      },
    ],
  }
  myChart.setOption(option)
  const btns = document.querySelector('#btns')
  btns.addEventListener('click', function (e) {
    if (e.target.tagName === 'BUTTON') {
      btns.querySelector('.btn-blue').classList.remove('btn-blue')
      e.target.classList.add('btn-blue')
      const group = e.target.innerHTML
      option.xAxis.data = data[group].map((item) => item.name)
      option.series[0].data = data[group].map((item) => item.hope_salary)
      option.series[1].data = data[group].map((item) => item.salary)
      myChart.setOption(option)
    }
  })
}

// 创建饼图的函数
const setGenderSalary = (data) => {
  const chartDom = document.querySelector('#gender')

  const myChart = echarts.init(chartDom)
  myChart.setOption({
    title: [
      {
        text: '男女薪资分布',
        top: '3%',
       left: '2%',
      },
      {
        text: '男生',
        top: '48%',
        left: 'center',
      },
      {
        text: '女生',
        top: '90%',
       left: 'center',
      }
    ],
    tooltip: {
      trigger: 'item',
    },
    color: ['#FDA224', '#5097FF', '#3ABCFA', '#34D39A'],
    series: [
      {
        name: '班级薪资分布',
        type: 'pie',
        radius: ['20%', '34%'],
        center: ['50%', '30%'],
        avoidLabelOverlap: false,
        emphasis: {
          label: {
            show: true,
            fontSize: '10',
            fontWeight: 'bold',
          },
        },
        data: data.map((item) => {
          return {
            name: item.label,
            value: item.b_count,
          }
        }),
      },
      {
        name: '班级薪资分布',
        type: 'pie',
        radius: ['20%', '34%'],
        center: ['50%', '70%'],
        avoidLabelOverlap: false,
        emphasis: {
          label: {
            show: true,
            fontSize: '10',
            fontWeight: 'bold',
          },
        },
        data: data.map((item) => {
          return {
            name: item.label,
            value: item.g_count,
          }
        }),
      },
    ],
  })
}

//  创建地图
const initMapChart = (provinceData) => {
  const myEchart = echarts.init(document.querySelector('#map'))
  const newData = provinceData.map((item) => {
    return {name: item.name.replace(/省|自治区|回族|壮族|维吾尔/g, ''),value: item.value}
 })
 const dataList = [
  { name: '南海诸岛', value: 0 },
  { name: '北京', value: 0 },
  { name: '天津', value: 0 },
  { name: '上海', value: 0 },
  { name: '重庆', value: 0 },
  { name: '河北', value: 0 },
  { name: '河南', value: 0 },
  { name: '云南', value: 0 },
  { name: '辽宁', value: 0 },
  { name: '黑龙江', value: 0 },
  { name: '湖南', value: 0 },
  { name: '安徽', value: 0 },
  { name: '山东', value: 0 },
  { name: '新疆', value: 0 },
  { name: '江苏', value: 0 },
  { name: '浙江', value: 0 },
  { name: '江西', value: 0 },
  { name: '湖北', value: 0 },
  { name: '广西', value: 0 },
  { name: '甘肃', value: 0 },
  { name: '山西', value: 0 },
  { name: '内蒙古', value: 0 },
  { name: '陕西', value: 0 },
  { name: '吉林', value: 0 },
  { name: '福建', value: 0 },
  { name: '贵州', value: 0 },
  { name: '广东', value: 0 },
  { name: '青海', value: 0 },
  { name: '西藏', value: 0 },
  { name: '四川', value: 0 },
  { name: '宁夏', value: 0 },
  { name: '海南', value: 0 },
  { name: '台湾', value: 0 },
  { name: '香港', value: 0 },
  { name: '澳门', value: 0 },
]
  dataList.forEach(x => {
    newData.forEach(y => {
       x.name === y.name && (x.value = y.value)
     })
  })
  
  let option = {
    title: {
      text: '籍贯分布',
      top: 10,
      left: 10,
      textStyle: {
        fontSize: 16,
      },
    },
    tooltip: {
      trigger: 'item',
      formatter: '{b}: {c} 位学员',
      borderColor: 'transparent',
      backgroundColor: 'rgba(0,0,0,0.5)',
      textStyle: {
        color: '#fff',
      },
    },
    visualMap: {
      min: 0,
      max: 6,
      left: 'left',
      bottom: '20',
      text: ['6', '0'],
      inRange: {
        color: ['#ffffff', '#0075F0'],
      },
      show: true,
      left: 40,
    },
    geo: {
      map: 'china',
      roam: false,
      zoom: 1.0,
      label: {
        normal: {
          show: true,
          fontSize: '10',
          color: 'rgba(0,0,0,0.7)',
        },
      },
      itemStyle: {
        normal: {
          borderColor: 'rgba(0, 0, 0, 0.2)',
          color: '#e0ffff',
        },
        emphasis: {
          areaColor: '#34D39A',
          shadowOffsetX: 0,
          shadowOffsetY: 0,
          shadowBlur: 20,
          borderWidth: 0,
          shadowColor: 'rgba(0, 0, 0, 0.5)',
        },
      },
    },
    series: [
      {
        name: '籍贯分布',
        type: 'map',
        geoIndex: 0,
        data: dataList,
      },
    ],
  }
  myEchart.setOption(option)
}
